<!DOCTYPE html>
<html lang="zh-CN">
	<head>
		<meta charset="UTF-8" />
		<meta name="viewport" content="width=device-width, initial-scale=1.0" />
		<title>facebook</title>
	</head>
	<body style="margin-top: 0px; padding: 5px">
		<input type="button" onclick="alert('我是 Facebook 页面中的按钮')" value="I LIKE IT !" />
	</body>
</html>
